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 30862-ea47bd413c) Lines: 1467 1530 95.9 % Date: 2026-05-06 09:26:47 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296336
RgX_gtofp_bit	7048894
RgX_normalize1	35838
X2XP1	5991060
ZX_Uspensky	1313919
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15275
ZX_graeffe	5439
ZX_realroots_irred	48652
ZX_rescale2prim	2234004
ZX_sturm	6395
ZX_sturm_i	123107
ZX_sturm_irred	116712
ZX_sturmpart	1128290
ZX_to_ZiX	16495241
ZiX_sqr	99237620
_gen_nored	11203668
_gen_one	14476091
_gen_zero	326042
_intervalcmp	0
_mp_add	24663846
_mp_cmul	34770633
_mp_mul	4375576
_mp_sqr	6299611
_mp_sub	0
_sqrtnr	22668
a_posteriori_errors	537508
abs_update	8022063
abs_update_r	780200
all_roots	536413
append_clone	1616323
bkeval_single_power	5236868
check_ab	1178917
checkbound	2354963
checkvalidpol	267361
clean_roots	536451
cleanroots	231763
cmp_complex_appr	2241664
conformal_basecase	1406599
conformal_mapping	468827
conformal_pol	1406718
dblexp	6563296
dbllog2	303936609
dft	503375
dual_modulus	1014584
eval_rel_pol	13169977
fft	14197101
fft2	7462
findpower	41032659
fix_roots	537514
fix_roots1	398827
fujiwara_bound	2274179
fujiwara_bound_real	1407016
graeffe	49606370
homothetie	1613745
homothetie2n	9980148
homothetie_gauss	36566941
ind_maxlog2	904416
initdft	998351
isexactpol	240117
isexactscalar	934122
isreal	963804
isvalidcoeff	1231117
logmax_modulus	4459123
logmin_modulus	1617844
logmodulus	608289
logpre_modulus	608292
logradius	494975
lower_bound	41032893
mydbllog2i	226781770
mydbllog2r	57632224
mydbllogr	9566978
mygprec	63867529
mygprec_absolute	4344496
mygprec_special	537517
mygprecrc	215593512
mygprecrc_special	2181600
myshiftic	136081732
myshiftrc	35580962
newton_polygon	5521417
optimize_split	494979
parameters	494978
pol_to_gaussint	17629051
polgraeffe	14
polmod_to_embed	84
polrootsbound	27237
polrootsbound_i	27230
polsolve	166731
quicktofp	6988242
realroots	50627
refine_F	503376
refine_H	2464810
root_error	1914592
roots	8382
roots_aux	240145
roots_com	240117
rootsdeg0	42
scalepol	4297815
scalepol2n	0
sol_ok	3378
solve_exact_pol	231509
split_0	495349
split_0_1	469199
split_0_2	469199
split_1	468828
split_2	494979
split_complete	1528204
split_fromU	494979
split_pols	166734
splitcauchy	166745
splitpoleval	5236354
tocomplex	1216015
update_radius	494976
usp	1126167

Generated by: LCOV version 1.16