Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30536-6f6fcf9613) Lines: 1467 1530 95.9 % Date: 2025-11-06 09:21:54 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296412
RgX_gtofp_bit	7031615
RgX_normalize1	35900
X2XP1	5990352
ZX_Uspensky	1313804
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15274
ZX_graeffe	5390
ZX_realroots_irred	48654
ZX_rescale2prim	2233777
ZX_sturm	6395
ZX_sturm_i	123172
ZX_sturm_irred	116777
ZX_sturmpart	1128157
ZX_to_ZiX	16458616
ZiX_sqr	99031193
_gen_nored	11201067
_gen_one	14472177
_gen_zero	326137
_intervalcmp	0
_mp_add	24660851
_mp_cmul	34764110
_mp_mul	4374565
_mp_sqr	6298296
_mp_sub	0
_sqrtnr	22709
a_posteriori_errors	537222
abs_update	8005337
abs_update_r	778664
all_roots	536119
append_clone	1614180
bkeval_single_power	5235317
check_ab	1178784
checkbound	2354700
checkvalidpol	267059
clean_roots	536165
cleanroots	231763
cmp_complex_appr	2238529
conformal_basecase	1403904
conformal_mapping	467928
conformal_pol	1404024
dblexp	6549116
dbllog2	302114808
dft	502371
dual_modulus	1012466
eval_rel_pol	13138336
fft	14159512
fft2	7462
findpower	40958060
fix_roots	537221
fix_roots1	398466
fujiwara_bound	2271701
fujiwara_bound_real	1406842
graeffe	49507949
homothetie	1610104
homothetie2n	9957735
homothetie_gauss	36499303
ind_maxlog2	902673
initdft	996353
isexactpol	239753
isexactscalar	931714
isreal	961913
isvalidcoeff	1230230
logmax_modulus	4450964
logmin_modulus	1614831
logmodulus	606758
logpre_modulus	606752
logradius	493977
lower_bound	40957253
mydbllog2i	226450823
mydbllog2r	56173908
mydbllogr	9546877
mygprec	63758638
mygprec_absolute	4339951
mygprec_special	537225
mygprecrc	215193824
mygprecrc_special	2179177
myshiftic	135812291
myshiftrc	35507224
newton_polygon	5507238
optimize_split	493983
parameters	493981
pol_to_gaussint	17589287
polgraeffe	14
polmod_to_embed	84
polrootsbound	27299
polrootsbound_i	27292
polsolve	166717
quicktofp	6978958
realroots	50627
refine_F	502367
refine_H	2460519
root_error	1912575
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4289446
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494345
split_0_1	468294
split_0_2	468294
split_1	467931
split_2	493982
split_complete	1525902
split_fromU	493983
split_pols	166724
splitcauchy	166731
splitpoleval	5235695
tocomplex	1213952
update_radius	493982
usp	1126029

Generated by: LCOV version 1.16