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 30584-b9873745ba) Lines: 1467 1530 95.9 % Date: 2025-12-22 09:21:19 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5390
ZX_sturm	6395
fft2	7462
roots	8018
ZX_deg1root	15194
_sqrtnr	22589
polrootsbound_i	27125
polrootsbound	27132
RgX_normalize1	35733
ZX_realroots_irred	48556
realroots	50627
ZX_sturm_irred	116573
ZX_sturm_i	122968
polsolve	166673
split_pols	166674
splitcauchy	166686
solve_exact_pol	231145
cleanroots	231763
isexactpol	239753
roots_com	239753
roots_aux	239781
checkvalidpol	266892
QX_complex_roots	296173
_gen_zero	325931
fix_roots1	398347
split_1	467779
conformal_mapping	467782
split_0_1	468146
split_0_2	468146
parameters	493833
logradius	493834
split_2	493834
update_radius	493835
optimize_split	493836
split_fromU	493836
split_0	494199
refine_F	502212
dft	502223
all_roots	535883
clean_roots	535926
a_posteriori_errors	536981
fix_roots	536982
mygprec_special	536990
logpre_modulus	606534
logmodulus	606535
abs_update_r	778534
ind_maxlog2	902402
isexactscalar	931714
isreal	961613
initdft	996058
dual_modulus	1012165
usp	1125900
ZX_sturmpart	1128289
check_ab	1178916
tocomplex	1213158
isvalidcoeff	1228149
ZX_Uspensky	1313778
conformal_basecase	1403460
conformal_pol	1403568
fujiwara_bound_real	1406734
split_complete	1525382
homothetie	1609585
append_clone	1613497
logmin_modulus	1614305
root_error	1911598
mygprecrc_special	2178257
ZX_rescale2prim	2233502
cmp_complex_appr	2237228
fujiwara_bound	2271039
checkbound	2354962
refine_H	2459869
scalepol	4288121
mygprec_absolute	4337342
_mp_mul	4374478
logmax_modulus	4449461
bkeval_single_power	5234079
splitpoleval	5234363
newton_polygon	5505106
X2XP1	5989657
_mp_sqr	6297837
dblexp	6547135
quicktofp	6976630
RgX_gtofp_bit	7028900
abs_update	8003161
mydbllogr	9544157
homothetie2n	9954195
_gen_nored	11197585
eval_rel_pol	13133866
fft	14154189
_gen_one	14469208
ZX_to_ZiX	16447384
pol_to_gaussint	17583290
_mp_add	24658974
_mp_cmul	34756914
myshiftrc	35494893
homothetie_gauss	36485390
findpower	40942881
lower_bound	40943050
graeffe	49491512
mydbllog2r	56169263
mygprec	63739907
ZiX_sqr	99005042
myshiftic	135763547
mygprecrc	215110700
mydbllog2i	226353404
dbllog2	302000291

Generated by: LCOV version 1.16