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 30595-a3cd9a95e8) Lines: 1467 1530 95.9 % Date: 2026-01-04 09:21:39 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296168
RgX_gtofp_bit	7029109
RgX_normalize1	35733
X2XP1	5989880
ZX_Uspensky	1313759
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15197
ZX_graeffe	5390
ZX_realroots_irred	48560
ZX_rescale2prim	2233550
ZX_sturm	6395
ZX_sturm_i	122975
ZX_sturm_irred	116580
ZX_sturmpart	1128261
ZX_to_ZiX	16450927
ZiX_sqr	99014577
_gen_nored	11203175
_gen_one	14472888
_gen_zero	326017
_intervalcmp	0
_mp_add	24662563
_mp_cmul	34769203
_mp_mul	4374498
_mp_sqr	6298273
_mp_sub	0
_sqrtnr	22589
a_posteriori_errors	536973
abs_update	8003986
abs_update_r	778530
all_roots	535875
append_clone	1613503
bkeval_single_power	5235664
check_ab	1178888
checkbound	2354904
checkvalidpol	266892
clean_roots	535920
cleanroots	231763
cmp_complex_appr	2237265
conformal_basecase	1403483
conformal_mapping	467786
conformal_pol	1403601
dblexp	6547209
dbllog2	302066828
dft	502234
dual_modulus	1012193
eval_rel_pol	13134476
fft	14155384
fft2	7462
findpower	40946267
fix_roots	536973
fix_roots1	398348
fujiwara_bound	2271042
fujiwara_bound_real	1406736
graeffe	49496510
homothetie	1609629
homothetie2n	9954534
homothetie_gauss	36490771
ind_maxlog2	902440
initdft	996075
isexactpol	239753
isexactscalar	931714
isreal	961628
isvalidcoeff	1228149
logmax_modulus	4449524
logmin_modulus	1614340
logmodulus	606551
logpre_modulus	606547
logradius	493840
lower_bound	40946752
mydbllog2i	226387228
mydbllog2r	56170117
mydbllogr	9544756
mygprec	63742117
mygprec_absolute	4337386
mygprec_special	536981
mygprecrc	215132521
mygprecrc_special	2178261
myshiftic	135818678
myshiftrc	35495357
newton_polygon	5505284
optimize_split	493841
parameters	493842
pol_to_gaussint	17583961
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166690
quicktofp	6976802
realroots	50627
refine_F	502232
refine_H	2459956
root_error	1911562
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288159
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494205
split_0_1	468150
split_0_2	468150
split_1	467787
split_2	493839
split_complete	1525382
split_fromU	493841
split_pols	166698
splitcauchy	166700
splitpoleval	5235584
tocomplex	1213161
update_radius	493842
usp	1125949

Generated by: LCOV version 1.16